1
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Xue T, Wei Y, Yu C, Zhou Z, Zhang F. RAFT polymerization of MMA in channels of different mesoporous materials. CHEMICAL PAPERS 2023. [DOI: 10.1007/s11696-023-02734-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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2
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Mijangos C, Martin J. Polymerization within Nanoporous Anodized Alumina Oxide Templates (AAO): A Critical Survey. Polymers (Basel) 2023; 15:polym15030525. [PMID: 36771824 PMCID: PMC9919978 DOI: 10.3390/polym15030525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/10/2023] [Accepted: 01/11/2023] [Indexed: 01/21/2023] Open
Abstract
In the last few years, the polymerization of monomers within the nanocavities of porous materials has been thoroughly studied and developed, allowing for the synthesis of polymers with tailored morphologies, chemical architectures and functionalities. This is thus a subject of paramount scientific and technological relevance, which, however, has not previously been analyzed from a general perspective. The present overview reports the state of the art on polymerization reactions in spatial confinement within porous materials, focusing on the use of anodized aluminum oxide (AAO) templates. It includes the description of the AAO templates used as nanoreactors. The polymerization reactions are categorized based on the polymerization mechanism. Amongst others, this includes electrochemical polymerization, free radical polymerization, step polymerization and atom transfer radical polymerization (ATRP). For each polymerization mechanism, a further subdivision is made based on the nature of the monomer used. Other aspects of "in situ" polymerization reactions in restricted AAO geometries include: conversion monitoring, kinetic studies, modeling and polymer characterization. In addition to the description of the polymerization process itself, the use of polymer materials derived from polymerization in AAO templates in nanotechnology applications, is also highlighted. Finally, the review is concluded with a general discussion outlining the challenges that remain in the field.
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Affiliation(s)
- Carmen Mijangos
- Instituto de Ciencia y Tecnología de Polímeros, ICTP-CSIC, Juan de la Cierva 3, 28006 Madrid, Spain
- Donostia International Physics Center, DIPC, Paseo de Manuel Lardizabal 4, 20018 Donostia-San Sebastian, Spain
- POLYMAT, University of the Basque Country UPV/EHU, Avenida Tolosa 72, 20018 Donostia-San Sebastian, Spain
- Correspondence:
| | - Jaime Martin
- POLYMAT, University of the Basque Country UPV/EHU, Avenida Tolosa 72, 20018 Donostia-San Sebastian, Spain
- Grupo de Polímeros, Centro de Investigacións Tecnolóxicas (CIT), Universidade da Coruña, 15471 Ferrol, Spain
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3
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Chebil MS, Bouaoulo G, Gerard P, Euch SEL, Issard H, Richaud E. Oxidation and unzipping in ELIUM resin: Kinetic model for mass loss. Polym Degrad Stab 2021. [DOI: 10.1016/j.polymdegradstab.2021.109523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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4
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Tian Q, Zhao H, Simon SL. Kinetic study of alkyl methacrylate polymerization in nanoporous confinement over a broad temperature range. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122868] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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5
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Bayat H, Raoufi M, Zamrik I, Schönherr H. Poly(diethylene glycol methylether methacrylate) Brush-Functionalized Anodic Alumina Nanopores: Curvature-Dependent Polymerization Kinetics and Nanopore Filling. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:2663-2672. [PMID: 32073275 DOI: 10.1021/acs.langmuir.9b03700] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report on the synthesis and characterization of poly(diethylene glycol methylether methacrylate) (PDEGMA) brushes by surface-initiated atom transfer radical polymerization inside ordered cylindrical nanopores of anodic aluminum oxide with different pore radii between 20 and 185 nm. In particular, the dependence of polymerization kinetics and the degree of pore filling on the interfacial curvature were analyzed. On the basis of field emission scanning electron microscopy data and thermal gravimetric analysis (TGA), it was concluded that the polymerization rate was faster at the pore orifice compared to the pore interior and also as compared to the analogous reaction carried out on flat aluminum oxide substrates. The apparent steady-state polymerization rate near the orifice increased with decreasing pore size. Likewise, the overall apparent polymerization rate estimated from TGA data indicated stronger confinement for pores with increased curvature as well as increased mass transport limitations due to the blockage of the pore orifice. Only for pores with a diameter to length ratio of ∼1, PDEGMA brushes were concluded to grow uniformly with constant thickness. However, because of mass transport limitations in longer pores, incomplete pore filling was observed, which leads presumably to a PDEGMA gradient brush. This study contributes to a better understanding of polymer brush-functionalized nanopores and the impact of confinement, in which the control of polymer brush thickness together with grafting density along the nanopores is key for applications of PDEGMA brushes confined inside nanopores.
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Affiliation(s)
- Haider Bayat
- Physical Chemistry I & Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
| | - Mohammad Raoufi
- Physical Chemistry I & Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
| | - Imad Zamrik
- Physical Chemistry I & Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
| | - Holger Schönherr
- Physical Chemistry I & Research Center of Micro and Nanochemistry and Engineering (Cμ), Department of Chemistry and Biology, School of Science and Technology, University of Siegen, Adolf-Reichwein-Str. 2, 57076 Siegen, Germany
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6
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Wang H, Qiang Y, Shamsabadi AA, Mazumder P, Turner KT, Lee D, Fakhraai Z. Thermal Degradation of Polystyrene under Extreme Nanoconfinement. ACS Macro Lett 2019; 8:1413-1418. [PMID: 35651194 DOI: 10.1021/acsmacrolett.9b00649] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Extreme nanoconfinement has been shown to significantly affect the properties of materials. Here we demonstrate that extreme nanoconfinement can significantly improve the thermal stability of polystyrene (PS) and reduce its flammability. Capillary rise infiltration (CaRI) is used to infiltrate PS into films of randomly packed silica nanoparticles (NPs) to produce highly confined states. We demonstrate that as the NP size is decreased, increasing the degree of confinement, the isothermal degradation time is dramatically increased, by up to a factor of 30 at 543 K for PS confined in ∼3 nm pores. The activation energy of PS degradation is also increased, by 50 kJ/mol in the most confined state (∼3 nm pores). We demonstrate that the degradation proceeds through the film surface and from the center of large holes toward NP surfaces, indirect evidence that the process is diffusion limited. The surface-driven process dramatically reduces char formation even in large NP packings that show no significant changes in their dynamics and glass transition temperature (Tg) compared to the bulk.
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Affiliation(s)
- Haonan Wang
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Yiwei Qiang
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Ahmad Arabi Shamsabadi
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Prantik Mazumder
- Corning Research and Development Corporation, Corning, New York 14830, United States
| | - Kevin T. Turner
- Department of Mechanical Engineering and Applied Mechanics, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Daeyeon Lee
- Department of Chemical and Biomolecular Engineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Zahra Fakhraai
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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7
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Tsagkalias IS, Vlachou A, Verros GD, Achilias DS. Effect of Graphene oxide or Functionalized Graphene Oxide on the Copolymerization Kinetics of Styrene/n-butyl Methacrylate. Polymers (Basel) 2019; 11:polym11060999. [PMID: 31167490 PMCID: PMC6630914 DOI: 10.3390/polym11060999] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2019] [Revised: 05/29/2019] [Accepted: 05/30/2019] [Indexed: 11/20/2022] Open
Abstract
Nanocomposite materials based on copolymers of styrene and n-butyl methacrylate with either graphene oxide (GO) or functionalized graphene oxide (F-GO) were synthesized using the in-situ bulk radical copolymerization technique. Reaction kinetics was studied both experimentally and theoretically using a detailed kinetic model also taking into account the effect of diffusion-controlled phenomena on the reaction kinetic rate constants. It was found that the presence of GO results in lower polymerization rates accompanied by the synthesis of copolymers having higher average molecular weights. In contrast, the presence of F-GO did not seem to significantly alter the conversion vs time curves, whereas it results in slightly lower average molecular weights. The first observation was attributed to side reactions of the initiator primary radicals with the hydroxyl groups on the surface of GO, resulting in lower initiator efficiency, whereas the second to grafted structures formed from copolymer macromolecules on the F-GO surface. The copolymerization model predictions including MWD data were found to be in satisfactory agreement with the experimental data. At least four adjustable parameters were employed and their best-fit values were provided.
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Affiliation(s)
- Ioannis S Tsagkalias
- Laboratory of Polymer and Dyes Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece.
| | - Afrodite Vlachou
- Laboratory of Polymer and Dyes Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece.
| | - George D Verros
- Laboratory of Polymer and Dyes Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece.
| | - Dimitris S Achilias
- Laboratory of Polymer and Dyes Chemistry and Technology, Department of Chemistry, Aristotle University of Thessaloniki, GR-541 24 Thessaloniki, Greece.
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8
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Tarnacka M, Maksym P, Zięba A, Mielańczyk A, Geppert-Rybczyńska M, Leon-Boigues L, Mijangos C, Kamiński K, Paluch M. The application of spatially restricted geometries as a unique route to produce well-defined poly(vinyl pyrrolidones) via free radical polymerisation. Chem Commun (Camb) 2019; 55:6441-6444. [PMID: 31098603 DOI: 10.1039/c9cc02625h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report, for the first time, the metal-free green synthesis of linear poly(vinyl pyrrolidone) (PVP) homopolymers of molecular weight higher than 100 kg mol-1 and narrow dispersities via thermal and photo-induced free radical polymerisation carried out within alumina nanoporous membranes acting as "nanoreactors".
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Affiliation(s)
- Magdalena Tarnacka
- Institute of Physics, University of Silesia, ul. Uniwersytecka 4, 40-007 Katowice, Poland.
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9
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Tarnacka M, Dzienia A, Maksym P, Talik A, Zięba A, Bielas R, Kaminski K, Paluch M. Highly Efficient ROP Polymerization of ε-Caprolactone Catalyzed by Nanoporous Alumina Membranes. How the Confinement Affects the Progress and Product of ROP Reaction. Macromolecules 2018. [DOI: 10.1021/acs.macromol.8b00409] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Magdalena Tarnacka
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Andrzej Dzienia
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
- Institute of Chemistry, University of Silesia, Szkolna 9, 40-007 Katowice, Poland
| | - Paulina Maksym
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Agnieszka Talik
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Andrzej Zięba
- Department of Organic Chemistry, School of Pharmacy with the Division of Laboratory Medicine in Sosnowiec, Medical University of Silesia in Katowice, Jagiellonska 4, 41-200 Sosnowiec, Poland
| | - Rafał Bielas
- Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Strzody 9, 44-100 Gliwice, Poland
| | - Kamil Kaminski
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Marian Paluch
- Institute of Physics, University of Silesia, 75 Pulku Piechoty 1, 41-500 Chorzow, Poland
- Silesian Center of Education and Interdisciplinary Research, University of Silesia, 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
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10
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Maksym P, Tarnacka M, Wolnica K, Dzienia A, Erfurt K, Chrobok A, Zięba A, Bielas R, Kaminski K, Paluch M. Studies on the hard confinement effect on the RAFT polymerization of a monomeric ionic liquid. Unexpected triggering of RAFT polymerization at 30 °C. Polym Chem 2018. [DOI: 10.1039/c7py01726j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
For the first time, the RAFT polymerization of a monomeric ionic liquid under hard confinement was successfully carried out.
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11
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An experimental and theoretical study of butyl methacrylatein situradical polymerization kinetics in the presence of graphene oxide nanoadditive. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28512] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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12
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Worthington KS, Baguenard C, Forney BS, Guymon CA. Photopolymerization kinetics in and of self-assembling lyotropic liquid crystal templates. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/polb.24296] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kristan S. Worthington
- Department of Chemical and Biochemical Engineering; The University of Iowa, 4133 Seamans Center; Iowa City Iowa 52242
- Department of Ophthalmology and Visual Sciences; The University of Iowa, 4156 Medical Education and Research Facility; Iowa City Iowa 52242
| | - Céline Baguenard
- Department of Chemical and Biochemical Engineering; The University of Iowa, 4133 Seamans Center; Iowa City Iowa 52242
- Cheminnov - ENSCBP; CANOE; 16 Avenue Pey Berland Pessac 33600 France
| | - Bradley S. Forney
- Department of Chemical and Biochemical Engineering; The University of Iowa, 4133 Seamans Center; Iowa City Iowa 52242
- 3M Construction & Home Improvement Markets Division; 3M Center; 251-1E-19 St. Paul Minnesota 55144
| | - C. Allan Guymon
- Department of Chemical and Biochemical Engineering; The University of Iowa, 4133 Seamans Center; Iowa City Iowa 52242
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13
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Tarnacka M, Chrobok A, Matuszek K, Golba S, Maksym P, Kaminski K, Paluch M. Polymerization of Monomeric Ionic Liquid Confined within Uniaxial Alumina Pores as a New Way of Obtaining Materials with Enhanced Conductivity. ACS APPLIED MATERIALS & INTERFACES 2016; 8:29779-29790. [PMID: 27709888 DOI: 10.1021/acsami.6b10666] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Broadband dielectric spectroscopy (BDS) and differential scanning calorimetry (DSC) have been employed to probe dynamics and charge transport of 1-butyl-3-vinylimidazolium bis(trifluoromethanesulfonyl)imide ([bvim][NTf2]) confined in native uniaxial AAO pores as well as to study kinetics of radical polymerization of the examined compound as a function of the degree of confinement. Subsequently, the electronic conductivity of the produced polymers was investigated. As observed, polymerization carried out at T = 363 K proceeds faster under confinement with some saturation effect observed for the sample in pores of smaller diameter. Obtained results were discussed in the context of the very recent reports showing that the free volume of the confined material is higher with respect to the bulk one. It was also noted that conductivity of poly[bvim][NTf2] is significantly higher with respect to the macromolecules obtained upon bulk polymerization. Moreover, charge transport of the confined macromolecules is even higher when compared to the bulk monomeric ionic liquid at some thermodynamic conditions. Additionally, the molecular weight, Mw, of the confined-synthesized polymers is significantly higher with respect to the bulk-synthesized material. Interestingly, both parameters, (i) the enhancement of σdc and (ii) the increase in Mw, can be tuned and controlled by the application of the appropriate confinement. Consequently, those results are quite promising in the context of development of the fabrication of polymerized ionic liquids (PILs) nanomaterials with unique properties and morphologies, which can be further easily applied in the field of nanotechnology.
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Affiliation(s)
- Magdalena Tarnacka
- Institute of Physics, University of Silesia , Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian Center for Education and Interdisciplinary Research, University of Silesia , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Anna Chrobok
- Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology , Krzywoustego 4, 44-100 Gliwice, Poland
| | - Karolina Matuszek
- Department of Chemical Organic Technology and Petrochemistry, Silesian University of Technology , Krzywoustego 4, 44-100 Gliwice, Poland
| | - Sylwia Golba
- Institute of Materials Science, University of Silesia , 75 Pulk Piechoty 1A, 41-500 Chorzow, Poland
| | - Paulina Maksym
- Department of Physical Chemistry and Technology of Polymers, Faculty of Chemistry, Silesian University of Technology , Strzody 9, 44-100 Gliwice, Poland
| | - Kamil Kaminski
- Institute of Physics, University of Silesia , Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian Center for Education and Interdisciplinary Research, University of Silesia , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
| | - Marian Paluch
- Institute of Physics, University of Silesia , Uniwersytecka 4, 40-007 Katowice, Poland
- Silesian Center for Education and Interdisciplinary Research, University of Silesia , 75 Pulku Piechoty 1A, 41-500 Chorzow, Poland
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14
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Verros GD, Achilias DS. Toward the development of a mathematical model for the bulk in situ radical polymerization of methyl methacrylate in the presence of nano-additives. CAN J CHEM ENG 2016. [DOI: 10.1002/cjce.22539] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- George D. Verros
- Laboratory of Organic Chemical Technology; Department of Chemistry; Aristotle University of Thessaloniki; 541 24 Thessaloniki Greece
| | - Dimitris S. Achilias
- Laboratory of Organic Chemical Technology; Department of Chemistry; Aristotle University of Thessaloniki; 541 24 Thessaloniki Greece
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15
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Mijangos C, Hernández R, Martín J. A review on the progress of polymer nanostructures with modulated morphologies and properties, using nanoporous AAO templates. Prog Polym Sci 2016. [DOI: 10.1016/j.progpolymsci.2015.10.003] [Citation(s) in RCA: 124] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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16
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Yang RD, Cheng Z, Chen GW, Yang F. Preparation and characteristics of polyacrylic ester-based water-free powder coatings in supercritical carbon dioxide. J Appl Polym Sci 2015. [DOI: 10.1002/app.42439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Ren-dang Yang
- State Key Lab of Pulp and Paper Engineering; South China University of Technology; Guangzhou 510640 Guangdong People's Republic of China
| | - Zheng Cheng
- State Key Lab of Pulp and Paper Engineering; South China University of Technology; Guangzhou 510640 Guangdong People's Republic of China
| | - Guo-wei Chen
- State Key Lab of Pulp and Paper Engineering; South China University of Technology; Guangzhou 510640 Guangdong People's Republic of China
- Technique Center; Baoding Bill Printing Factory; Hebei People's Republic of China
| | - Fei Yang
- State Key Lab of Pulp and Paper Engineering; South China University of Technology; Guangzhou 510640 Guangdong People's Republic of China
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17
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Tarnacka M, Dulski M, Starzonek S, Adrjanowicz K, Mapesa EU, Kaminski K, Paluch M. Following kinetics and dynamics of DGEBA-aniline polymerization in nanoporous native alumina oxide membranes – FTIR and dielectric studies. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.05.022] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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18
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Yancey B, Vyazovkin S. The kinetics and mechanism of nanoconfined molten salt reactions: trimerization of potassium and rubidium dicyanamide. Phys Chem Chem Phys 2015; 17:10209-17. [PMID: 25796991 DOI: 10.1039/c5cp01056j] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This study highlights the effect of the aggregate state of a reactant on the reaction kinetics under the conditions of nanoconfinement. Our previous work (Phys. Chem. Chem. Phys., 2014, 16, 11409) has demonstrated considerable deceleration of the solid state trimerization of sodium dicyanamide in organically modified silica nanopores. In the present study we use FTIR, NMR, pXRD, TGA and DSC to analyze the kinetics and mechanism of the liquid state trimerization of potassium and rubidium dicyanamide under similar conditions of nanoconfinement. It is found that nanoconfinement accelerates dramatically the kinetics of the liquid state trimerization, whereas it does not appear to affect the reaction mechanism. Kinetic analysis indicates that the acceleration is associated with an increase in the preexponential factor. Although nanoconfinement has the opposite effects on the respective kinetics of solid and liquid state trimerization, both effects are linked to a change in the preexponential factor. The results obtained are consistent with our hypothesis that the effects differ because nanoconfinement may promote disordering of the solid and ordering of the liquid reaction media.
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Affiliation(s)
- Benjamin Yancey
- Department of Chemistry, University of Alabama at Birmingham, 901 S. 14th Street, Birmingham, AL 35294, USA.
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19
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Gao Z, He J. Monte Carlo Modeling of Free Radical Polymerization in Microflow Reactors. MACROMOL REACT ENG 2015. [DOI: 10.1002/mren.201400061] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zehui Gao
- Department of Macromolecular Science; The State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
| | - Junpo He
- Department of Macromolecular Science; The State Key Laboratory of Molecular Engineering of Polymers; Fudan University; Shanghai 200433 China
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20
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The effect of nanoconfinement on methyl methacrylate polymerization: Tg, molecular weight, and tacticity. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.07.040] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Giussi JM, Blaszczyk-Lezak I, Cortizo MS, Mijangos C. In-situ polymerization of styrene in AAO nanocavities. POLYMER 2013. [DOI: 10.1016/j.polymer.2013.10.045] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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22
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Kumar K, Woortman AJJ, Loos K. Synthesis of Amylose–Polystyrene Inclusion Complexes by a Facile Preparation Route. Biomacromolecules 2013; 14:1955-60. [DOI: 10.1021/bm400340k] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Kamlesh Kumar
- Department
of Polymer Chemistry, Zernike Institute
for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Albert J. J. Woortman
- Department
of Polymer Chemistry, Zernike Institute
for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
| | - Katja Loos
- Department
of Polymer Chemistry, Zernike Institute
for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, Groningen, The Netherlands
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23
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Begum F, Sarker RH, Simon SL. Modeling Ring/Chain Equilibrium in Nanoconfined Sulfur. J Phys Chem B 2013; 117:3911-6. [DOI: 10.1021/jp400145n] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fatema Begum
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United
States
| | - Rakibul H. Sarker
- Department of Petroleum
Engineering, Marietta College, Marietta,
Ohio 45750, United States
| | - Sindee L. Simon
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United
States
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Begum F, Zhao H, Simon SL. Modeling methyl methacrylate free radical polymerization: Reaction in hydrophilic nanopores. POLYMER 2012. [DOI: 10.1016/j.polymer.2012.05.023] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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Lin PH, Kohale SC, Khare R. Effect of Nanoconfinement on Kinetics of Cross-Linking Reactions: A Molecular Simulation Study. J Phys Chem B 2011; 115:12348-55. [DOI: 10.1021/jp2038398] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Po-Han Lin
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United States
| | - Swapnil C. Kohale
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United States
| | - Rajesh Khare
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United States
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